Search-and-rescue teams bolstered by National Guard troops fanned out across Colorado's flood-stricken landscape, as a week of torrential rains blamed for eight deaths and the destruction of at least 1,600 homes finally gave way to sunny skies.

*Nucor, Encana reach gas supply agreement. *Nucor shares rise 1.3 pct, Encana. CALGARY, Alberta, Nov 6- Nucor Corp said on Tuesday it has signed a deal to develop natural gas wells with Canada's Encana Corp it hopes will guarantee supply more than 20 years for its steel mills and other facilities in the United States.

Nov 6- Steel producer Nucor Corp said on Tuesday it has signed a deal to develop natural gas wells with Canada's EnCana Corp that it hopes will guarantee supply for more than 20 years. Under the terms of the deal, the companies will share costs to develop wells in the continental United States.

TORONTO, Oct 12- Toronto's main stock index pulled back on Friday and marked its worst weekly performance in four months as worries about the euro zone's crisis strategy, the upcoming U.S. election and slowing global economic growth limited the appeal of riskier assets. 0.5 percent at C $53.22, and Bank of Montreal.

Oct 12- Toronto's main stock index looked set to open higher on Friday, taking cues from its largest trading partner, after robust earnings from JPMorgan marked a strong start for the U.S. banks earnings season.

TORONTO, Oct 11- Canada's main stock index rose slightly on Thursday, recovering from three days of losses that culminated in a five-week low, encouraged by U.S. employment data and comments from the IMF that were seen as supporting stability in the euro zone.